idocrase

American  

[ahy-duh-kreys, id-uh-] / ˈaɪ dəˌkreɪs, ˈɪd ə- /

noun

Mineralogy.

1. vesuvianite.

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idocrase British  

/ ˈaɪdəˌkreɪs, ˈɪd- /

noun

1. another name for vesuvianite

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Etymology

Origin of idocrase

1795–1805; < French < Greek eîdo ( s ) form + krâsis mixture

Example Sentences

Idocrase, id′o-krāz, n. the mineral vesuvianite.

From Project Gutenberg

Under andradite may also be placed topazolite, a honey-yellow garnet, rather like topaz, from Piedmont; colophonite, a brown resin-like garnet, with which certain kinds of idocrase have been confused; aplome, a green garnet from Saxony and Siberia; and jelletite, a green Swiss garnet named after the Rev. J.H.

From Project Gutenberg

I think we may fairly assert that such minerals as tourmaline, jargoon, peridote, spinel and chrysoberyl, though their names may be familiar, are not stones which would be recognized by any but those who are in some sense experts; while other minerals, such as sphene, andalusite, axinite, idocrase and diopside, are possibly almost unknown to most people, even by reputation.

From Project Gutenberg

The following minerals produce beads with a small quantity of soda, but if too much is added they produce slags: okenite, pectolite, red silicate of manganese, black hydro-silicate of manganese, idocrase, manganesian garnets, orthite, pyrorthite, sordawalite, sodalite, fluorspar.

From Project Gutenberg

A banded and mottled calc-silicate hornfels occurring with the limestone at Iyerry Falls, W. N.W. of Braemar, has yielded malacolite, wollastonite, brown idocrase, garnet, sphene and hornblende.

From Project Gutenberg